Nagging leads to what ?!

So, I just watched my all time favorite show, as you can tell The House of Payne, which tonight i was so excited because it followed what happened to miranda and calvin's argument. Oh, if you don't watch this show... basically calvin and miranda are newlyweds and calvin has a secret that he kissed another woman (mercedes) and was over her house for a night.. and his WIFE does not know obviously, until she became suspicious when a new bf of mercedes came over for dinner and got into an argument with calvin and was saying that he needed to tell his wife his secret; chea. That was last episode, tonight followed up with basically mercedes (who is clueless that miranda is suspicious) came by their apartment (her and calvin work together) to drop off a bag and it was an "awkward" moment for her and calvin, and miranda seemed to catch on. That led to her asking again, and accusing him... nd all she had to back it up was "her women's intuition." Calvin lies... again, and after their argument he gets really angry walks out on her and then goes to mercedes house and kisses her right at her door. That was the end of tonight's episode. Now, I'm thinking in my mind... wtf, Wtf, WTf, WTF !???
lol how could he do that AGAIN to his wife, who in the end is right ? Surprisingly enough, my mom makes the comment, "thats what happens when she nagged too much." Seriously mom? or should I say, seriously men? the nagging of women gives you the initiative to go out and do something like this? Can a man please tell me it isn't so. Or is my mom right in that maybe us women nagging, actually does drive our men crazy to the point of looking for another? but in a marriage I believe that it is so much serious than that, and with the sharing of your life you promised, if there is nagging included shouldn't you be willing to try and look pass it and work it out? Its just hard for me to sit here and grasp that nagging of women can drive your man to cheat. Isn't there something opposite for women? like the overprotection of men lead women to cheat? ugh, didn't think so.